How to add ‘Defragment’ to the Context Menu for a Drive

Navigate to Start, type regedit in the search box and press enter.

Scroll down to the following key:

HKEY_CLASSES_ROOT\Drive\shell

Right click shell and select New – Key from the drop down list.

Name the new key runas.

Double click on the (default) value in the right hand pane and enter in the following:

Defragment

Create another new key called Command in the right hand pane of runas.

Double click on the (default) value in Command and enter in the following:

defrag %1 -v

Note: This command runs defrag with the default options but shows verbose output.

Done!